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        <title>OpenLayers WFS Protocol with Filter</title> 
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        <h1 id="title">WFS Protocol and Filter</h1> 
        <div id="tags"> 
            filter, wfs, comparison
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        <p id="shortdesc"> 
            Demonstrates the use of a filter in making GetFeature requests using the WFS protocol.
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            <p> 
                If a vector layer has a filter and the protocol supports server-side filtering,
                the filter will be serialized in requests for features.  The WFS protocol can be
                used with a vector layer to serialize a filter using OGC Filter Encoding.  This
                example requests all features that are <code>TYPE</code> "highway" or "road".
            </p><p> 
                See the <a href="wfs-filter.js" target="_blank">wfs-filter source</a> 
                for details on how this is done.
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